Child chair having engaging assembly for seat

1. A child chair comprising:

a seat;

a frame, the seat being detachably mounted on the frame, the frame comprising:

a front leg comprising an upper front leg and a lower front leg, the upper front leg being mounted on a top of the lower front leg; and

a rear leg pivotally connected to one of the upper front leg and the lower front leg; and

an engaging assembly comprising:

an engaging device mounted on one side of the seat and movable between a locking position and a release position relative to the seat, the engaging device comprising a first protruding portion; and

a coupling device mounted on the front leg and coupled with the engaging device on the seat so as to fasten the seat, the coupling device comprising a recess and a first guiding track, the recess being communicated with the first guiding track, and the first protruding portion being movable in the recess and the first guiding track so as to enable the engaging device to move between the locking position and the release position; and

a driving device movably mounted on the seat and connected to the engaging device, the driving device being capable of driving the engaging device to move from the locking position to the release position.

2. The child chair of claim 1 , wherein the driving device comprises a second protruding portion, the engaging device comprises a second guiding track, the second protruding portion extends to the second guiding track, and the second guiding track comprises a first abutting position and a second abutting position; when the engaging device is located at the locking position, the second protruding portion is located at the first abutting position; when the driving device moves along a release direction relative to the seat, the second protruding portion moves to the second abutting position in the second guiding track so as to drive the first protruding portion of the engaging device to move from the recess to the first guiding track.

3. The child chair of claim 2 , wherein the second guiding track is oblique, and the second abutting position is closer to the first protruding portion than the first abutting position.

4. The child chair of claim 1 , wherein the recess cooperates with the first guiding track to form an L-shaped groove.

5. The child chair of claim 1 , wherein the driving device is a button.

6. The child chair of claim 1 , wherein the engaging assembly further comprises a first resilient member disposed between the engaging device and the seat and used for generating a bias force so as to drive the engaging device to move from the release position to the locking position.

7. The child chair of claim 6 , wherein the engaging assembly further comprises a casing, the first resilient member biases the engaging device and the casing, and the casing covers the engaging device and is fastened on the seat.

8. The child chair of claim 1 , wherein the seat comprises a guiding groove corresponding to the coupling device, and the coupling device comprises a guiding rib cooperating with the guiding groove so as to enable the seat to be detached in a specific direction.

9. The child chair of claim 1 , wherein the engaging assembly comprises two engaging devices and two coupling devices, the two engaging devices are symmetrically mounted on both sides of the seat, and the two coupling devices are symmetrically mounted on the front leg.

10. The child chair of claim 1 , wherein one of the seat and the upper front leg of the frame comprises a guiding track, the other one of the seat and the upper front leg of the frame comprises a guiding groove, and when the seat is detached from the frame, the guiding track moves in the guiding groove.